I need some new headphones for at-work use... these "wrap around" style ones are staring to hurt my ears. I mean, I've got those big "pro" headphones at home, so I guess I could use those too. Then it will be obvious that I'm wearing headphones while working, so my cow-orkers won't just walk but behind me and start talking when I can't hear them.

I don't need anything high-end (since it's for use at the office), but fair quality.

Anyone have any suggestions for a good at-work set of 'phones?